<template>
  <div id="body">
    <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
    </div>
  </div>
</template>

<script>
export default {};
</script>


<style lang="scss" scoped>
#body {
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;

  div {
    position: relative;
    width: 510px;
    height: 510px;
  }

  div span {
    position: absolute;
    display: block;
    background: #ffffff;
    animation: animate 12s ease-in-out infinite;
  }

  @keyframes animate {
    0%,
    100% {
      transform: rotate(0deg);
    }
    50% {
      transform: rotate(360deg);
    }
  }

  div span:nth-child(even) {
    background: #2f2f2f;
  }

  div span:nth-child(even)::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 50%;
    background: #ffffff;
    transform: translateY(-50%);
  }
  div span:nth-child(even)::after {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    width: 50%;
    height: 100%;
    background: #ffffff;
    transform: translateX(-50%);
  }
  div span:nth-child(odd)::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 50%;
    background: #2f2f2f;
    transform: translateY(-50%);
  }
  div span:nth-child(odd)::after {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    width: 50%;
    height: 100%;
    background: #2f2f2f;
    transform: translateX(-50%);
  }

  div span:nth-child(1) {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    animation-delay: 1s;
  }

  div span:nth-child(2) {
    top: 30px;
    left: 30px;
    right: 30px;
    bottom: 30px;
    animation-delay: 0.9s;
  }
  div span:nth-child(3) {
    top: 60px;
    left: 60px;
    right: 60px;
    bottom: 60px;
    animation-delay: 0.8s;
  }
  div span:nth-child(4) {
    top: 90px;
    left: 90px;
    right: 90px;
    bottom: 90px;
    animation-delay: 0.7s;
  }
  div span:nth-child(5) {
    top: 120px;
    left: 120px;
    right: 120px;
    bottom: 120px;
    animation-delay: 0.5s;
  }
  div span:nth-child(6) {
    top: 150px;
    left: 150px;
    right: 150px;
    bottom: 150px;
    animation-delay: 0.4s;
  }
  div span:nth-child(7) {
    top: 180px;
    left: 180px;
    right: 180px;
    bottom: 180px;
    animation-delay: 0.3s;
  }
  div span:nth-child(8) {
    top: 210px;
    left: 210px;
    right: 210px;
    bottom: 210px;
    animation-delay: 0.2s;
  }
  div span:nth-child(9) {
    top: 240px;
    left: 240px;
    right: 240px;
    bottom: 240px;
    animation-delay: 0.1s;
  }
}
</style>